
public class SellTickstDemo {
    public static void main(String[] args) {
        SellTicket  st=new SellTicket();
        Thread   t1=new Thread(st,"窗口一");
        Thread   t2=new Thread(st,"窗口二");
        Thread   t3=new Thread(st,"窗口三");
        t1.start();
        t2.start();
        t3.start();
    }
}
